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Message-ID: <20181026093205.GD3159@worktop.c.hoisthospitality.com>
Date: Fri, 26 Oct 2018 11:32:05 +0200
From: Peter Zijlstra <peterz@...radead.org>
To: Igor Stoppa <igor.stoppa@...il.com>
Cc: Mimi Zohar <zohar@...ux.vnet.ibm.com>,
Kees Cook <keescook@...omium.org>,
Matthew Wilcox <willy@...radead.org>,
Dave Chinner <david@...morbit.com>,
James Morris <jmorris@...ei.org>, Michal Hocko <mhocko@...nel.org>,
kernel-hardening@...ts.openwall.com,
linux-integrity@...r.kernel.org,
linux-security-module@...r.kernel.org, igor.stoppa@...wei.com,
Dave Hansen <dave.hansen@...ux.intel.com>,
Jonathan Corbet <corbet@....net>, Laura Abbott <labbott@...hat.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Andrew Morton <akpm@...ux-foundation.org>,
Masahiro Yamada <yamada.masahiro@...ionext.com>,
Alexey Dobriyan <adobriyan@...il.com>,
Pekka Enberg <penberg@...nel.org>,
"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
Lihao Liang <lianglihao@...wei.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 13/17] prmem: linked list: disable layout randomization
On Wed, Oct 24, 2018 at 12:35:00AM +0300, Igor Stoppa wrote:
> Some of the data structures used in list management are composed by two
> pointers. Since the kernel is now configured by default to randomize the
> layout of data structures soleley composed by pointers, this might
> prevent correct type punning between these structures and their write
> rare counterpart.
'might' doesn't really work for me. Either it does or it does not.
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